Help me prepare for a debt collector lawsuit

A debt collector is suing me and the court case is next week. I tried using multiple debt settlement companies to make an arrangement with the debt collector. The companies fell thru and said they can’t service the account so now there is a court date next Tuesday.

There are 2-3 reasons I believe the debt is unfair. My goal is to prevent a judgement on Tuesday, buy some time, and either avoid the debt all together or negotiate a lower amount and better repayment terms.